Struct Selector 

pub struct Selector<'i> {
    pub kind: SelectorKind,
    pub expr: Expr<'i>,
    pub alias: Option<Ident<'i>>,
}

Aggregate selector such as avg(expr) as alias.

Fields

kind: SelectorKind

Aggregate kind.

expr: Expr<'i>

Inner expression the aggregate applies to.

alias: Option<Ident<'i>>

Optional as alias.

Implementations

impl<'i> Selector<'i>

pub fn new( kind: &Ident<'i>, expr: Expr<'i>, alias: Option<Ident<'i>>, ) -> Result<Self, ParseError<Loc, Token<'i>, Error>>

Builds a selector, resolving kind against the supported aggregates.

Trait Implementations

impl<'i> Clone for Selector<'i>

fn clone(&self) -> Selector<'i>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'i> Debug for Selector<'i>

fn fmt(&self, __derive_more_f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'i> PartialEq for Selector<'i>

fn eq(&self, other: &Selector<'i>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'i> StructuralPartialEq for Selector<'i>